Document Detail


Leading a conspecific away from food in ravens (Corvus corax)?
MedLine Citation:
PMID:  15069605     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Active misleading of conspecifics has been described as a social strategy mainly for primates. Here we report a raven leading a competitor away from food in a social foraging task. Four individuals had to search and compete for hidden food at color-marked clusters of artificial food caches. At the beginning of the experiment, a subordinate male found and exploited the majority of the food. As a result, the dominant male displaced him from the already opened boxes. The subordinate male then developed a pattern, when the loss of reward to the dominant got high, of moving to unrewarded clusters and opening boxes there. This diversion often led the dominant to approach those unrewarded clusters and the subordinate then had a head start for exploiting the rewarded boxes. Subsequently, however, the dominant male learned not to follow the subordinate to unrewarded clusters and eventually started searching for the reward himself. These interactions between the two males illustrate the ravens' potential for deceptively manipulating conspecifics. We discuss under which circumstances ravens might use this capacity.
Authors:
Thomas Bugnyar; Kurt Kotrschal
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2003-09-10
Journal Detail:
Title:  Animal cognition     Volume:  7     ISSN:  1435-9448     ISO Abbreviation:  Anim Cogn     Publication Date:  2004 Apr 
Date Detail:
Created Date:  2004-04-07     Completed Date:  2004-06-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9814573     Medline TA:  Anim Cogn     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  69-76     Citation Subset:  IM    
Affiliation:
Konrad Lorenz Research Station, 4645 Grünau 11, Austria. tbugnyar@zoo.uvm.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Association Learning*
Behavior, Animal
Competitive Behavior
Deception*
Dominance-Subordination*
Feeding Behavior
Female
Food
Male
Problem Solving*
Social Environment
Songbirds*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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